This study uses sociological and historical methodologies to analyze the role of sport in the formation of urban identity in Chicago. The author traces the transformation of Chicago from a frontier town to a commercial behemoth, examining its role as an immigration, transportation, and entertainment hub. The author argues that, as a pioneering leader in American sport history, Chicago allowed teams and athletes to forge a unique national and global identity. This thorough and well-researched study makes a major contribution to debates on the social and psychological functions of sport culture.